Disneyland will bring back the popular Hyperspace Mountain roller coaster overlay and march a legion of stormtroopers into Tomorrowland to celebrate May the Fourth, the unofficial Star Wars holiday.

The May the Fourth event kicks off a countdown celebration leading up to the May 31 debut of the highly anticipated new Star Wars: Galaxy's Edge themed land at the Anaheim theme park.

The Star Wars-themed overlay of Space Mountain was first introduced during the 2015 Season of the Force event. During the re-themed ride, scenes of X-Wings, Starfighters and even the Millennium Falcon flash on the interior walls of Space Mountain as riders race through the dark aboard the indoor coaster. The highlight: A TIE fighter that heads right for the coaster train with an effect reminiscent of the boulder scene in the Indiana Jones Adventure.

The chrome-armored Captain Phasma from "The Force Awakens" and a small legion of First Order stormtroopers will march through Tomorrowland as part of the celebration.

Tomorrowland's Galactic Grill will serve a Star Wars-inspired Dark Side chicken sandwich while Alien Pizza Planet will offer Outer Rim Pasta as part of the celebration.

Star Wars novelty steins, sipper cups and popcorn buckets will also be sold during the event. Limited edition May the Fourth pins will be available in Star Trader shop and the Star Wars Launch Bay attraction.

First Order and Resistance photo opportunities will be set up in Tomorrowland's former Starcade video game arcade.

Disneyland did not announce dates or times for the May the Fourth event - a play on "May the Force be with you" - promising more details later this week.